JPS5593384A - Color television receiver of beam index type - Google Patents
Color television receiver of beam index typeInfo
- Publication number
- JPS5593384A JPS5593384A JP210479A JP210479A JPS5593384A JP S5593384 A JPS5593384 A JP S5593384A JP 210479 A JP210479 A JP 210479A JP 210479 A JP210479 A JP 210479A JP S5593384 A JPS5593384 A JP S5593384A
- Authority
- JP
- Japan
- Prior art keywords
- output
- television receiver
- fed
- color television
- beam index
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
PURPOSE: To prevent the lowering in the contrast of picture, by obtaining the index signal representing the beam position on the fluorescent screen without flowing the beam current of slight amount at all times as the bias current.
CONSTITUTION: An arbitrary horizontal scanning period in one vertical scanning period is selected and a given voltage W(t) is fed to the cathode 6. Thus, a given beam current flows to the cathode ray tube 100, secondary electron flow is detected, and an output is caused from the pulse forming circuit 14. This output and the output of the monostable multivibrator 23 activated by this output are synthesized at the OR circuit, and after the pulse width is extended, it is fed to the delay element 25. Further, the output of the delay element is used as the index signal at the next one horizontal scanning.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP210479A JPS5593384A (en) | 1979-01-10 | 1979-01-10 | Color television receiver of beam index type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP210479A JPS5593384A (en) | 1979-01-10 | 1979-01-10 | Color television receiver of beam index type |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5593384A true JPS5593384A (en) | 1980-07-15 |
Family
ID=11520029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP210479A Pending JPS5593384A (en) | 1979-01-10 | 1979-01-10 | Color television receiver of beam index type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5593384A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58116892A (en) * | 1981-12-29 | 1983-07-12 | Sanyo Electric Co Ltd | Beam index type color television receiver |
-
1979
- 1979-01-10 JP JP210479A patent/JPS5593384A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58116892A (en) * | 1981-12-29 | 1983-07-12 | Sanyo Electric Co Ltd | Beam index type color television receiver |
JPH0418510B2 (en) * | 1981-12-29 | 1992-03-27 | Sanyo Electric Co |
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